Transcube's line of transportable fuel tanks are DOT approved for road transportation and UL 142 certified for safe diesel fuel storage. The double-walled, internally baffled tanks provide "110-percent secondary containment of the inner container's total capacity to eliminate the risk of spills and contamination," says the company. Models come in of capacitieis 132, 264, 528 and 792 gallons. All fill ports, pumps, fittings and connections are housed at the top of the tank within the secondary containment area. The tank's forklift pockets are accessible on all four sides of the tank; load lifting eyes are on the top corners.